JP2002098191A - Vibration-proof bush and vibration-proof apparatus - Google Patents
Vibration-proof bush and vibration-proof apparatusInfo
- Publication number
- JP2002098191A JP2002098191A JP2000290992A JP2000290992A JP2002098191A JP 2002098191 A JP2002098191 A JP 2002098191A JP 2000290992 A JP2000290992 A JP 2000290992A JP 2000290992 A JP2000290992 A JP 2000290992A JP 2002098191 A JP2002098191 A JP 2002098191A
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- inner cylinder
- housing
- proof
- projection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Power Steering Mechanism (AREA)
- Vibration Prevention Devices (AREA)
- Springs (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば電動式動力
舵取装置のギヤハウジング等を車体に取り付けるのに用
いられる防振ブッシュおよび防振装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration bush and an anti-vibration device used for mounting a gear housing or the like of an electric power steering device to a vehicle body.
【０００２】[0002]
【従来の技術】ボールねじ式の減速機構を用いた電動式
動力舵取装置では、ステアリングギヤを起振源とする比
較的周波数の高い振動が車室内に伝搬し、運転者にとっ
て騒音となるという問題がある。ところで、従来の動力
舵取装置でも、マウンティングラバーを用いてギヤハウ
ジングを車体に弾性支持することが実施されている。し
かし、この種のマウンティングラバーは、外部からの入
力である、概ね１００Ｈｚ以下の低周波の振動をステア
リングホイールに伝搬させないことを目的としていた。
このため、減速ギアを起振源とする高周波の振動に対す
る防振効果はあまり期待できない。2. Description of the Related Art In an electric power steering apparatus using a ball screw type speed reduction mechanism, relatively high frequency vibrations generated by a steering gear as a vibration source propagate into a vehicle cabin, resulting in noise for a driver. There's a problem. By the way, also in the conventional power steering device, the gear housing is elastically supported on the vehicle body using the mounting rubber. However, this type of mounting rubber has an object of preventing low-frequency vibration of approximately 100 Hz or less, which is an external input, from being transmitted to the steering wheel.
For this reason, the anti-vibration effect against high-frequency vibration generated by the reduction gear as a vibration source cannot be expected very much.
【０００３】[0003]
【発明が解決しようとする課題】ギヤ振動に対する防振
効果を高めるために、マウンティングラバーとして軟ら
かいゴムを使用すれば良いのであるが、そうした場合、
ラック軸の軸方向に沿ってギヤハウジングに高負荷が作
用するときに、ゴムが過大に変形し、このため、応答遅
れ等を生じて操舵フィーリングが悪くなる。逆に硬いゴ
ムを使用すると、高負荷が作用するときにゴムの変形量
が少なくなって操舵フィーリングが向上するものの、防
振効果が低下してしまう。In order to enhance the anti-vibration effect against gear vibration, a soft rubber may be used as the mounting rubber.
When a high load acts on the gear housing along the axial direction of the rack shaft, the rubber is excessively deformed, which causes a response delay or the like, resulting in poor steering feeling. Conversely, when a hard rubber is used, the amount of deformation of the rubber when a high load acts is reduced and the steering feeling is improved, but the vibration isolation effect is reduced.
【０００４】本発明は上記課題に鑑みてなされたもので
あり、防振効果が高く、しかも弾性部材が過大に変形す
ることがない防振ブッシュ、およびこれを含む防振装置
を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide an anti-vibration bush having a high anti-vibration effect and in which an elastic member is not excessively deformed, and an anti-vibration device including the same. Aim.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するた
め、本発明の防振ブッシュは、ハウジングの挿通孔に挿
通される軸とハウジングとの間に介在し、両者間の振動
伝達を抑制する防振ブッシュにおいて、外周に突起を有
する内筒と、この内筒の周囲を突起を含めて取り囲む筒
状の弾性部材とを備え、上記突起によって、ハウジング
の挿通孔に対する内筒の偏心量を抑制するようにしてあ
ることを特徴とするものである。In order to achieve the above object, a vibration isolating bush according to the present invention is interposed between a shaft inserted into a through hole of a housing and the housing, and suppresses transmission of vibration between the two. The vibration-isolating bush includes an inner cylinder having a projection on the outer periphery and a cylindrical elastic member surrounding the inner cylinder including the projection, and the projection suppresses the eccentricity of the inner cylinder with respect to the insertion hole of the housing. It is characterized by doing so.
【０００６】本態様では、例えば高荷重が負荷されて、
内筒がハウジングの挿通孔に対して偏心するとき、突起
の頂部がハウジングの挿通孔の内周面に近接すること
で、これ以上の内筒の偏心が防止される。したがって、
弾性部材として、防振効果の高い軟らかいゴム等を使用
した場合にも、高負荷時の弾性部材の過大な変形を確実
に防止することができる。また、本発明の防振装置は、
上記の防振ブッシュを電動式動力舵取装置のハウジング
の挿通孔に挿通し、防振ブッシュの内筒内に挿通される
固定ボルトを介して、電動式動力舵取装置のハウジング
を車体に取り付けることを特徴とするものである。この
場合、ハウジング内の減速ギヤを起振源とする高周波の
振動を抑制するに十分な軟らかい弾性部材を用いること
ができ、しかも、ハウジングに高負荷が付与されたとき
にも、弾性部材が過大に変形することがなく、操舵フィ
ーリングを向上させることができる。In this embodiment, for example, when a high load is applied,
When the inner cylinder is eccentric with respect to the insertion hole of the housing, the top of the projection is close to the inner peripheral surface of the insertion hole of the housing, whereby further eccentricity of the inner cylinder is prevented. Therefore,
Even when soft rubber or the like having a high anti-vibration effect is used as the elastic member, excessive deformation of the elastic member under a high load can be reliably prevented. Further, the anti-vibration device of the present invention,
The above-mentioned anti-vibration bush is inserted into the insertion hole of the housing of the electric power steering device, and the housing of the electric power steering device is attached to the vehicle body via a fixing bolt inserted into the inner cylinder of the anti-vibration bush. It is characterized by the following. In this case, it is possible to use a soft elastic member that is sufficiently soft to suppress high-frequency vibration generated by the reduction gear in the housing as a vibration source, and that the elastic member becomes excessively large even when a high load is applied to the housing. And the steering feeling can be improved.
【０００７】[0007]
【発明の実施の形態】本発明の好ましい態様を添付図面
を参照しつつ説明する。図１は本発明の一実施の形態と
しての電動式動力舵取装置に適用された防振装置の概略
断面図である。図１を参照して、防振装置１は電動式動
力舵取装置２のギヤハウジング３を車体に取り付けるた
めに用いられる。図示していないが、ギヤハウジング３
には電動モータの回転を減速してアウトプットシャフト
に伝達するための例えばボールねじ式の減速機構が内蔵
されている。ギヤハウジング３に形成される挿通孔４に
防振ブッシュ５が挿入され、防振ブッシュ５を挿通する
固定用のボルト６を介して、ギヤハウジング３が車体側
メンバ７に固定される。防振ブッシュ５と固定用のボル
ト６により防振装置１が構成される。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic sectional view of a vibration isolator applied to an electric power steering apparatus as one embodiment of the present invention. Referring to FIG. 1, a vibration isolator 1 is used for mounting a gear housing 3 of an electric power steering device 2 to a vehicle body. Although not shown, the gear housing 3
Has a built-in, for example, a ball screw type reduction mechanism for reducing the rotation of the electric motor and transmitting the rotation to the output shaft. The vibration isolating bush 5 is inserted into an insertion hole 4 formed in the gear housing 3, and the gear housing 3 is fixed to the vehicle body side member 7 via a fixing bolt 6 that penetrates the vibration isolating bush 5. The vibration isolating device 1 is constituted by the vibration isolating bush 5 and the fixing bolts 6.
【０００８】防振ブッシュ５は、ギヤハウジング３の挿
通孔４に挿通されて車体側メンバ７にナット１２により
固定されるボルト６とギヤハウジング３との間に介在
し、車体側メンバ７とギヤハウジング３との間の振動伝
達を抑制する働きをする。防振ブッシュ５は、外周８に
複数の環状の突起９を有する内筒１０と、この内筒１０
の周囲を突起９を含めて取り囲む筒状の弾性部材１１と
を備えている。弾性部材１１は例えばゴムや合成ゴムか
らなり、例えば金属からなる内筒１０の外周面に加硫接
着されている。突起９は例えば断面山形をなし、内筒１
０の軸方向に所定間隔をおいて配置されている。The anti-vibration bush 5 is interposed between the gear housing 3 and a bolt 6 which is inserted into the insertion hole 4 of the gear housing 3 and is fixed to the vehicle body-side member 7 by a nut 12. It functions to suppress transmission of vibration between the housing 3 and the housing 3. An anti-vibration bush 5 includes an inner cylinder 10 having a plurality of annular projections 9 on an outer periphery 8,
And a cylindrical elastic member 11 that surrounds the periphery including the projection 9. The elastic member 11 is made of, for example, rubber or synthetic rubber, and is vulcanized and bonded to the outer peripheral surface of the inner cylinder 10 made of, for example, metal. The projection 9 has, for example, a chevron cross section, and the inner cylinder 1
They are arranged at predetermined intervals in the 0 axis direction.
【０００９】本実施の形態によれば、ギヤハウジング３
に例えば高荷重が負荷されて、内筒１０がギヤハウジン
グ３の挿通孔４に対して偏心するとき、突起９の頂部が
ギヤハウジング３の挿通孔４の内周面に近接すること
で、この部分で主に荷重を受け、これ以上の内筒１０の
偏心を防止することができる。したがって、弾性部材１
１として、防振効果の高い軟らかいゴム等を使用した場
合にも、高負荷時の弾性部材１１の過大な変形を確実に
防止することができ、その結果、操舵フィーリングを向
上させることができる。According to the present embodiment, the gear housing 3
For example, when a high load is applied to the inner cylinder 10 and the inner cylinder 10 is eccentric with respect to the insertion hole 4 of the gear housing 3, the top of the projection 9 approaches the inner peripheral surface of the insertion hole 4 of the gear housing 3. The load is mainly received at the portion, and further eccentricity of the inner cylinder 10 can be prevented. Therefore, the elastic member 1
As 1, the excessive deformation of the elastic member 11 under a high load can be reliably prevented even when a soft rubber or the like having a high anti-vibration effect is used, and as a result, the steering feeling can be improved. .
【００１０】特に、本実施の形態のような電動式動力舵
取装置２に防振装置１を適用したときに、十分な軟らか
い弾性部材１１を用いて、ギヤハウジング３内の減速ギ
ヤを起振源とする高周波の振動を抑制することができ、
しかも、ギヤハウジング３に高負荷が付与されたときに
弾性部材１１の過大な変形を防止して操舵フィーリング
を向上させることができる。本発明は上記実施の形態に
限定されるものではなく、内筒の外周に形成される突起
としては、環状の他、螺旋状のものであっても良い。そ
の他、本発明の範囲で種々の変更を施すことができる。In particular, when the vibration damping device 1 is applied to the electric power steering device 2 according to the present embodiment, the reduction gear in the gear housing 3 is vibrated by using a sufficiently soft elastic member 11. High-frequency vibration as the source can be suppressed,
In addition, when a high load is applied to the gear housing 3, excessive deformation of the elastic member 11 can be prevented, and the steering feeling can be improved. The present invention is not limited to the above embodiment, and the projection formed on the outer periphery of the inner cylinder may be a helical one instead of an annular one. In addition, various changes can be made within the scope of the present invention.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の一実施の形態として、電動式動力舵取
装置に適用された防振装置の概略断面図である。FIG. 1 is a schematic cross-sectional view of a vibration isolator applied to an electric power steering device as one embodiment of the present invention.
１ 防振装置 ２ 電動式動力舵取装置 ３ ギヤハウジング ４ 挿通孔 ５ 防振ブッシュ ６ ボルト ７ 車体側メンバ ８ 外周 ９ 突起 １０ 内周 １１ 弾性部材 １２ ナット DESCRIPTION OF SYMBOLS 1 Vibration-proof device 2 Electric power steering device 3 Gear housing 4 Insertion hole 5 Vibration-proof bush 6 Bolt 7 Body side member 8 Outer periphery 9 Projection 10 Inner periphery 11 Elastic member 12 Nut
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山本 和俊 大阪市中央区南船場三丁目５番８号 光洋 精工株式会社内 Ｆターム(参考） 3D033 CA00 HA05 3J048 AA01 BA07 BB03 CB05 EA21 3J059 AA04 AE01 BA59 BA72 BD01 CA14 CB03 GA16 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kazutoshi Yamamoto 3-5-8 Minamisenba, Chuo-ku, Osaka-shi F-term in Koyo Seiko Co., Ltd. 3D033 CA00 HA05 3J048 AA01 BA07 BB03 CB05 EA21 3J059 AA04 AE01 BA59 BA72 BD01 CA14 CB03 GA16
Claims (2)
ジングとの間に介在し、両者間の振動伝達を抑制する防
振ブッシュにおいて、 外周に突起を有する内筒と、この内筒の周囲を突起を含
めて取り囲む筒状の弾性部材とを備え、上記突起によっ
て、ハウジングの挿通孔に対する内筒の偏心量を抑制す
るようにしてあることを特徴とする防振ブッシュ。1. An anti-vibration bush interposed between a shaft inserted into an insertion hole of a housing and a housing to suppress transmission of vibration between the inner cylinder and an inner cylinder having a projection on an outer periphery and a periphery of the inner cylinder. And a cylindrical elastic member surrounding the inner cylinder including the projection, wherein the projection suppresses the amount of eccentricity of the inner cylinder with respect to the insertion hole of the housing.
舵取装置のハウジングの挿通孔に挿通し、防振ブッシュ
の内筒内に挿通される固定用のボルトを介して、電動式
動力舵取装置のハウジングを車体に取り付けることを特
徴とする防振装置。2. The electric vibration damping bush according to claim 1, which is inserted into a through hole of a housing of the electric power steering device, and is electrically driven through a fixing bolt inserted into an inner cylinder of the vibration damping bush. An anti-vibration device, wherein a housing of a power steering device is attached to a vehicle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000290992A JP2002098191A (en) | 2000-09-25 | 2000-09-25 | Vibration-proof bush and vibration-proof apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000290992A JP2002098191A (en) | 2000-09-25 | 2000-09-25 | Vibration-proof bush and vibration-proof apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002098191A true JP2002098191A (en) | 2002-04-05 |
Family
ID=18774141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000290992A Pending JP2002098191A (en) | 2000-09-25 | 2000-09-25 | Vibration-proof bush and vibration-proof apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002098191A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100925681B1 (en) * | 2009-03-13 | 2009-11-10 | 금강파이프 주식회사 | A Bush Srtructure of Suspension For Vehicle |
| KR102032122B1 (en) * | 2019-07-23 | 2019-10-15 | 주식회사 삼양테크 | Base system of water tank based on height-adjustable |
| CN111434945A (en) * | 2019-01-11 | 2020-07-21 | 上海汽车集团股份有限公司 | Shock attenuation isolating device |
| US10821793B2 (en) | 2017-01-31 | 2020-11-03 | Honda Motor Co., Ltd. | Suspension bush and suspension device |
-
2000
- 2000-09-25 JP JP2000290992A patent/JP2002098191A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100925681B1 (en) * | 2009-03-13 | 2009-11-10 | 금강파이프 주식회사 | A Bush Srtructure of Suspension For Vehicle |
| US10821793B2 (en) | 2017-01-31 | 2020-11-03 | Honda Motor Co., Ltd. | Suspension bush and suspension device |
| CN111434945A (en) * | 2019-01-11 | 2020-07-21 | 上海汽车集团股份有限公司 | Shock attenuation isolating device |
| CN111434945B (en) * | 2019-01-11 | 2022-04-12 | 上海汽车集团股份有限公司 | Shock attenuation isolating device |
| KR102032122B1 (en) * | 2019-07-23 | 2019-10-15 | 주식회사 삼양테크 | Base system of water tank based on height-adjustable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2006266354A (en) | Vibration control device | |
| JP2002098191A (en) | Vibration-proof bush and vibration-proof apparatus | |
| JP2000350397A (en) | Motor for electrically-driven power steering device | |
| JP4833883B2 (en) | Vibration isolator | |
| JP2002120735A (en) | Mounting structure of steering device | |
| KR100533462B1 (en) | Roll rod system of automobile | |
| JP2002178936A (en) | Mounting structure for steering device | |
| JP2004150596A (en) | Flexible mounting device | |
| JP2005147226A (en) | Fastening member with damping function, and vibration control device using its fastening member | |
| JPH11108096A (en) | Vibration control bush | |
| JPH10159792A (en) | Blower | |
| KR100460929B1 (en) | A mounting device of transmission in vehicles | |
| KR20180128623A (en) | Automobile damping bush | |
| JPH08247216A (en) | Vibration isolator | |
| KR100346477B1 (en) | Plastic hub structure of damper pulley for vehicle | |
| JPH0454344A (en) | Vibration-proof device | |
| JP2003212135A (en) | Vibration isolation structure for electric power steering system | |
| CN118009000A (en) | Dynamic damper | |
| KR20240058326A (en) | Insulator structure for power train mounting of vehicle | |
| KR20200141183A (en) | Roll mount device for vehicle | |
| KR100210304B1 (en) | Engine mounting for a vehicle | |
| KR100837492B1 (en) | Intermediate Shaft Assembly for a Vehicle having a Vibration-Proof Structure | |
| JPH0543242Y2 (en) | ||
| KR100471861B1 (en) | Mount device in vehicle | |
| JPH0454276A (en) | Roller bearing of starter |